Mechanical movement



7 March 31, 1925.

- R. L. ELLERY ECHANICAL MOVEMENT Filed April '7, 1924 2 Shoots-Shoot 1 II. v v gwuu-Mo'o Lccctccccccttctccc Patented Mar. 31, 1925;

fUNl-TED STATES v 1,531,271 PATENT "OFFICE.

ROBERT L. ELLE-RY, 0F TOLEDO, OHIO.

MECHANICAL MOVEMENT.

I Application m April 7,

is fully set forth in the following specification. This invention relates to mechanical movements, and particularly to such a movement adapted for use as a window raising and lowering mechanism.

The object of the invention is the provision of asimple', novel and efficient mecha-" nism for translating a continuous rotary movement into an intermittent linear move ment, and is adapted, .when. used as a window'raising or lowering mechanism, to imparta rapid, positive raising or lowering movement 'to thewindow closure memher, and, when at rest, to positively lock the window member against raising or lowering movements. v

The invention is fully described in the following specification, and while in its broader aspect it is capable of embodiments in numerous forms,-a preferred embodiment thereof is illustratedin the accompanying drawings, in which," I

Figure 1 is an elevation of a mechanism embodying the invention partly broken away and associated with the door of a closed vehicle, the door being fragmentarily shown. Fig. 2 is a vertical fragmentary section of the door. and associated window closure member with the mechanism embodying theinven'tion in operative relation. thereto. Fig. 3 is an "enlarged section on the line 3-3 in Fig; 1. Fig. 4 is an enlarged section on the line 4-- 4in Fig. 1. Fig.- 5 is a fragmentary elevation of a portion of themechanism illustrating the pawl actuating means. Fig. 6 is an enlarged cross-section on the line 66 in Fig. 1, and

Fig. 7 is an enlarged fragmentary perspective view of a portion of the mechanism.

Referring to the drawingsyl designates the door of a closed automobile, which door is provided in its upper portionfwith a window opening 2 adapted to be closed by a g'las's'or windowmember 3 and forming in its lower portion a' chamber 4 into which the window'member may be lowered and in which the control means for the window member i di posed- The door is provided common plane therewith and over the door 1924. Serial No. 704,727.

with the customary cross bar 5 in the upper portion of the chamber 4 at the outer side.

The mechanism embodying the invention includesan elongated frame member 6 of shallow channel form which is secured in upright position to the cross member 5 of the door within the chamber 1. This frame has its side edges provided with flanges 7, which extend away from the cross member 5 and which render the frame 6 of shallow channel form. The frame 6 is provided with a centrally disposed, longitudinal slot 8 and has a longitudinally extending portion 9 on its back or inner side which forms a guide-way 10 lengthwise of the slot 8 and which extends at either side of the slot, as best shown in Figs. 6 and 7. The bottom plate'portion of the frame 6 has a wing 11 extending from a side edge thereof in a member 5, the flange 7 being omitted from theedge portion of the frame from which the wing projects.

A slide block 12 is mounted in the guide lOfor longitudinal reciprocatory movements therein and a stub shaft 13 projects from this plate outwardly through the slot 8 and beyond the frame 6; A grooved roller 1% on which the lower edge of the window member 3 is intended to rest is carried by the projecting end of the shaft 13, and a pawl 15 is also carried by this shaft next to the bottom plate of the frame 6. This pawl, in the present instance, is suspended from the shaft 13 for free rocking move- 'ments relative thereto and is provided at its lower end with oppositely projecting rack bar engaging teeth, thus making the pawl of substantially T form.

A pawl actuating plate 16 is mounted within the channel-of the frame 6 against the bottom thereof and has a longitudinally extending slot 17 in register with the frame slot 8 and substantially co-extensive in length therewith but slightly wider than the same. The slot 17 is intended to receive the pawl 15 and in width is equal to the cross-sectional dimension of the toothed end is provided with transversely extending slots 19 through which the pins extend, thus causing the plate to be supported against longitudinal movement relative to the frame and permitting it to have limited transverse movement relative thereto. The plate 16 has a wing 20 projecting over the wing 11 of the frame 6 in sliding contact therewith and provided with a cam receiving opening 21.

A rack bar 22 is mounted over the pawl actuating plate 16 at each side of its slot 17 and has its rack teeth facing the teeth of the other rack bar. One rack bar is disposed in position for its teeth to be engaged by the adjacent tooth of the pawl 15 when swung in one direction, and the other rack bar is disposed in position for its teeth to be engaged by the other tooth of the pawl when the pawl is swung in the other direction, the pawl being released. from one rack bar when in engagement with the other. Each rack bar is mounted for limited reciprocatory movements longitudinally of the frame 6, and for such purpose has a series of longitudinally extending slots 23 which receive the pins 18 that project through the registeringslots 19 of the pawl actuating plate 16, the slots 19 and 23 being disposed in right-angular relation to each other. A pin 25 projects from the frame 6 between the rack bars 22 near the lower ends thereof and has its arms of equal length and pivoted to the respective rack bars, thus providing a connection between the rack bars which causes them to have corresponding opposed reciprocatory movements when either one is reciprocated.

The rack bar 22 at the side of the frame 6. from which the wing 11 projects, has a wing 26 projecting from its outer edge over the wing 20 of the pawl actuating plate 16 and is provided with a cam receiving ope11- ing 27.

An operating shaft 30 is journaled in suitable bearings provided in the cross member 5 and frame wing 11 and projects at one end without the inner side of the door 1 to receive an operating crank 31, and has its opposite end disposed substantially cen trally within the opening 21 and 27 of the wings 20 and 26. A cam 32 is mounted on the shaft 30 within said openings, and, in the present instance, is provided with three uniform cam faces of 120 each, which faces are of like radius and are struck from dif-;

ferent centers offset from the shaft center. The cam 32 is of sufficient thickness to extend within the openings of both wings 20 and 26, and so co-acts with the walls of the opening 21 of the pawl actuating plate 16 that a turning of the cam' will impart a predetermined, transverse, reciprocatory movement first in one direction and then the other to such plate relative to the frame, the

her has been raised or low plate being guided during such movements by the pins 18 in the plate slots 19. Nothing novel is claimed in itself for this manner of actuating the plate 16, as such cam means is old in the art. The cam 32 co-acts at top and bottom with the upper and lower edge walls of the rack bar opening 27 in a man ner to impart successive upward and downward reciprocatory movements to the rack bar at successive points in a turning of the cam, as is well understood in the art. In order to provide the wing 26 with broadened bearing surfaces for the cam, the metal of the wing is outwardly flanged at the upper and lower edges of the opening 27, as shown at It is apparent that a complete revo-- lution of the three shaft cam shown will impart three upward movements and three downward movements to the rack bar 22, to which it is immediately connected, and that it will likewise impart three movements in one direction and three in the other to the pawl actuating plate 16. It is also apparent that inasmuch as one of the rack bars is moving upward while the other is moving downward, the two rack bars will combine to have six movements, three for one and three for the other. in the same direction during a complete revolution of the cam.

In an operation of the device a turning of the cam will operate to transversely shift the pawl actuating plate 16 to throw the pawl into engagement with one or the other of the rack bars 22 and immediately thereafter the rack bars will be moved lengthwise of the frame 6 to impart a predetermined raising or lowering movement, as the case may be, to the member supported by the roller 14:. When this movement of the rack bar has been completed the cam will again act on the plate 16 to move it in the opposite direction from its previous movement so as to release the pawl from engagement with one rack bar and move it into engagement with the other. The cam then immediately acts on the rack barwith which it has engagement to move it in the opposite direction from that in which it was previously moved and this imparts a movement to the rack bar with which the pawl is engaged in the same direction that the pawl was moved by the other rack bar in the preceding advancing operation. This step by step raising or lowering movement of the pawl and the actuating member 3 to which it is connected is continued during a continued turning of the cam until the memered the desired extent. When the cam is at restthe pawl 15 is always in engagement with one or the other of the rack bars so as to positively lock the mechanism against actuating movements except through an operating of the cam.

It is apparent that inasmuch as three advancing movements are imparted to the actuating member 3 ateach complete rotation of the cam, quite a rapid raising or lowering movement is ii'nparted to the member and that suchmcvement is positive in its action.

I ,wish it understood that my invention is .not limited to any specific construction, ar-

alternately engage the rack bars, and means" having a rotatable control part operable to impart pawl shifting movements to said pawl actuating means and also operable to impart longitudinal reciprocatory movements to one of said rack bars. 7

2, In combination, a sliding member, a pair of transversely spaced rack bars, connection between the rack bars for causing them to move longitudinally in opposite directions when one is moved,.a pawl connected to the sliding member and operable V to alternately engage the teeth of the rack bars, a rotatable cam operable during a continuous rotation thereof to impart reciproca tory movements to one of said rack bars, and means actuated by a rotation of the cam intermediate the rack bar movements to move the pawl into engagement with first one and then the other of'the rack bars.

3. In combination, a pawl mounted for linear movements in one plane and for shifting movements transversely thereof, means connected to and actuated by the linear movements of said pawl, a pair of rack bars spaced transversely of the pawl and reciprocally movable in planes longitudinal to the linear movement of the pawl, connection between the rack bars for imparting opposed reciprocatory movements from one to the other when one is moved, and means having a rotatable actuating part for shifting the pawl into engagement with first one and then the other of the rack bars and after each shifting movement of the pawl to impart longitudinal movement in first one and then the other direction to one of said rack bars. 7

4. In combination, a part mounted for reciprocal movements, a pawl means con nected to and movable with said part, a pair of rack bars reciprocally movable in planes substantially parallel to the plane of move- 'ment of said part and connected to have opposed movements in unison when either is moved, and means having a rotatable actuating part and operable to move said pawl means into engagement with the teeth of first one and then the other of said rack bars and to impart reciprocatory movements to one of said rack bars and through it to the other during each period of engagen'ientof the pawl with a rack bar.

5. In combination, a partmounted for reciprocal movements, a pawl means connected to and movable with said part, a pair of rack bars reciprocally movable in planes substantially parallel to the plane of movement of said part and connected to have opposed movements in unison when either is moved, and means having a rotatable actuating member operable atdiiferent predetermined intervals in a single rotation of the member to impart a plurality of shifting movements to the pawl means to engage first one and then the other of the rack bars and operable to impart reciprocatory movement to one of the rack bars and through it in an opposite direction to the other rack bar during each period of engagement of the pawl with a rack bar.

6. In combination, a part mounted for reciprocatory movements, a pawl means connected to and movable with said part and being shiftable transversely of the direction of movement of the part, a pair of rack bars movable longitudinally of the direction of movement of the part and adapted to have simultaneous uniform movements in opposite directions, means shiftable transversely of the movement of the rack bars to shift the pawl means into engagement with the teeth of first one and then the other of the rack bars, and means having a rotatable actuating cam operable to move the pawl shifting means in first one direction and then the other and after each shifting of the pawl to actuate the rack bars to move the pawl and connected part a predetermined distance.

7. In combination, a frame member guided for reciprocatory movements by said frame, pawl means carried by said member. and mechanism for actuating said pawl means to impart step by step movements in one direction or the other thereto, said mechanism comprising a pair of rack bars, and means operable to alternately engage the pawl means with first one and then the other of said rack bars and to impart opposed reoiprocatory movements to the bars when the pawl means is in engagement with either, whereby first one and then the other of the bars imparts movement in the same direction to the pawl means and member.

8. In combination, a frame, a member guided for reciprocatory movements by said frame, pawl means carried by said member, a pair of rack bars reciprocally movable longitudinally of the direction of movement of said member and connected to have opposed reciprocatory movements in unison when either is moved, means guided tor movements transversely of the movements of the rack bars and adapted, when moved in one direct-ion, to cause the pawl means to engage one rack bar and when moved in the other direction to cause the pawl means to engage the other rack bar, and manually controlled means operable to impart predetermined alternating reciprocatory movements to the means for shifting said pawl means and to one of said rack bars.

9. In combination, a slida-ble window member, a stationary frame, a pair of rack bars guided by the frame for reeiprocatory movements longitudinally of the movements of the window member and operable to have opposed reciprocatory movements when either is moved, means engaging the window member and guided by the frame for reciprocatory movements lengthwise ot' the window member movement, whereby the window member and means move together, said means having a pawl shittable to alternately engage said rack bars, and mechanism manually operable to reciprocate one of the rack bars and to shift the pawl of said means into engagement with first one and then the other rack bar to impart a step by step movement in one direction or the other to the window member engaging means.

10. In combination, a slidable member, a guide frame, an actuating means for the member guided for reciprocatory longitudinal movements by the frame and having a pawl, rack bar means having two rack bars carried by the frame for opposed reciprocatory movements in unison lengthwise or" the movement of said actuating means and adapted to be alternately engaged by the pawl whereby the rack bars alternately impart step by step movements in either direction through the pawl to the actuating means, means operable to shift the pawl into engagement with first one and then the other of the rack bars, and control means operable to impart movement to the pawl shifting means and to impart reciprocatory movements to the rack bars to the member actuating means in one direction or the other.

11. In combination, a slidable member, a stationary frame, an actuating meanst'or said member guided by the frame for movements lengthwise of the movement of said member and having a pawl, a pair of rack bars guided by the frame for parallel reciprocatory movements longitudinally of the movements of said means, means connecting the rack bars to cause them to reciprocate in opposite directions when either is moved, a pawl actuating member guided by the frame for reciprooatory movements trans verse to the movements of the rack bars and adapted to shift the pawl into engagement with first one and then the other of the rack bars, and rotatable control means having cam engagement with one of said rack bars and with said pawl actuating member to impart predetermined respective, reciprocatory movements thereto when operated.

In testimony whereof I have hereunto signed my name to this specification.

ROBERT L. ELLERY. 

